EXPLORING THE PERIODIC TABLE

SC.912.P.8.5 RELATE PROPERTIES OF ATOMS TO THEIR ARRANGMENTS OF ELECTRONS KEY TERMS: IONS METAL NON-METAL SEMI-CONDUCTORS or METALLOIDS

THE STRUCTURE OF THE PERIODIC TABLE THE PERIODIC TABLE IS ARRANGED BY ATOMIC NUMBER

ATOMIC NUMBER THE ATOMIC NUMBER OF AN ELEMENT IS THE NUMBER OF PROTONS IN THE NUCLEUS OF THAT ATOM

PROTONS ARE EQUAL TO THE NUMBER OF ELECTRONS WHEN AN ATOM HAS NO CHARGE- IT IS CONSIDERED TO BE NEUTRAL WHEN THE NUMBER OF PROTONS AND ELECTRONS ARE EQUAL- THE ATOM HAS NO CHARGE

CHEMICAL BEHAVIOR OF AN ATOM THE CHEMICAL BEHAVIOR OF AN ATOM, OR ELEMENT IS DETERMINED BY THE NUMBER OF VALENCE ELECTRONS VALENCE ELECTRONS ARE THOSE ELECTRONS FOUND IN THE OUTER RING OR SHELL OF THE ATOM

COPY FIGURE 1 P 151 INTO YOUR NOTES PAGE 151 FIGURE 1 COPY FIGURE 1 P 151 INTO YOUR NOTES PAY ATTENTION TO THE RINGS FOR EACH ATOM 1- WHAT DO EACH OF THOSE ATOMS HAVE IN COMMON 2- HOW ARE EACH OF THOSE ATOMS DIFFERENT

PAGE 152 ELEMENT ENERGY LEVEL ORBITAL NUMBER OF ELECTRONS LITHIUM 1 S 2 2 S 1 HOW MANY ELECTRONS ARE FOUND IN THE VALENCE LEVEL

DO THE SAME TABLE FOR SODIUM 11Na ELEMENT’S NAME ENERGY LEVEL ORBITAL # OF ELECTRONS 1 S 2 3 P 6

SUMMARIZE THE TABLE FROM THE PREVIOUS SLIDE 1- WHAT IS THE NAME OF THE ELEMENT? 2- WHAT IS THE ATOMIC NUMBER OF THE ELEMENT? 3- WHAT IS THE NUMBER OF PROTONS IN THE NUCLEUS OF THE ELEMENT? 4- WHAT IS THE TOTAL NUMBER OF ELECTRONS IN THE ENERGY LEVELS FOR THAT ELEMENT? 5- HOW MANY ELECTRONS ARE PRESENT IN THE FIRST ENERGY LEVEL? THE SECOND ENERGY LEVEL? THE THIRD ENERGY LEVEL?

COMPARE LITHIUM AND SODIUM ELECTRON CONFIGURATIONS TOTAL ELECTRONS: TOTAL PROTONS: VALENCE SHELL NUMBER: NUMBER OF ELECTRONS IN THE VALENCE SHELL: TOTAL ELECTRONS: TOTAL PROTONS: VALENCE SHELL NUMBER: NUMBER OF ELECTRONS IN THE VALENCE SHELL: